What is Soft Start?

Definition

The gradual application of voltage or current to a motor during startup to limit mechanical stress and electrical inrush. Soft start functionality is provided by dedicated soft starters and is also built into variable frequency drives.

Related Terms

Soft Starter

A device that gradually ramps up voltage to a motor during starting, reducing in...

Inrush Current

The initial surge of current drawn when a motor, transformer, or capacitor bank ...

Ramp Time

The programmed time for a drive to accelerate or decelerate a motor between zero...

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